BRUSSELS, Aug 25: A record salmonella outbreak in a Belgium chicken farm has infected at least 306 people after they ​ate eggs, the food safety agency said on Tuesday.

The ‌agency said those who developed symptoms had been contaminated by a strain found at the farm, though many more may have contracted the ​disease but not been tested as they had shown ​only mild or no symptoms, said a spokesperson for ⁠the agency, known as AFSCA.

“Salmonella is relatively common in ​Belgium, but we never had such a broad cluster with so ​many people hit,” she said, adding that nobody had died.

AFSCA had first identified the contamination in May, issued a recall and closed down ​a hen house at a farm in Flanders, Belgium’s northern ​half. As more cases were reported, the whole farm was closed and ‌the ⁠poultry were culled after a second recall on August 10.

The company selling the eggs was identified as Laerco BV. It did not immediately respond to a Reuters request forcomment.

As ​many as 2 ​million eggs potentially ⁠contaminated with the bacteria were sold in Belgium and neighbouring Luxembourg, where the local health ​agency also issued a recall.

Some eggs might still ​be ⁠in some people’s kitchens and cause more cases despite the recall, the AFSCA spokesperson said.

Cooking the eggs reduces the risk of ⁠contracting ​the disease.

Salmonella is a group of ​rod-shaped bacteria that can cause salmonellosis, a common foodborne illness. Symptoms typically include ​diarrhea, fever and abdominal cramps.